Hello,
First thanks for all he work you have done (and for Dan's Help with TeamView last Night !) :
Works perfectly smooth with Oculus Rift à 85/90 fps int he B737 cockpit with Oculus Tray Tool supersampling set to 2.5 and high in-game settings :
Seams that the fact that Pimax4k is working with Steam VR makes it harder :
I have to put lower settings to make it work at 60 fps (Pimax4k 's maximum performance) : pixel density to 1 in game and rendering options set to 2 in Piplay
Anyway it works you can enjoy FFS with Pimax too, but should be optimized as with other softwares I get quite the same performances as the Rift (i.e;. : 60 fps with the Pimax and 90 fps with the Rift) despite the higher resolution with high VR settings.
(My config is : CPU i7 8700K (hexacore) no OC - 32 Go RAM DDR4 2400 - SSD 240Go SATA III - HDD 2To SATA III 64Mo - GTX 1070 TI 8Go Driver 416.34 - Win 10 64 - Flyinside Flight Simulator on external USB3 SSD / Oculus Rift CV1 / Pimax 4k )